{"id":53249,"date":"2026-09-10T08:01:32","date_gmt":"2026-09-10T08:01:32","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-latam\/uncategorized\/cpi-explained-how-us-inflation-data-moves-financial-markets\/"},"modified":"2026-09-10T08:01:32","modified_gmt":"2026-09-10T08:01:32","slug":"cpi-explained-how-us-inflation-data-moves-financial-markets","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-latam\/featured\/cpi-explained-how-us-inflation-data-moves-financial-markets\/","title":{"rendered":"IPC expliqu\u00e9 : comment les donn\u00e9es sur l\u2019inflation aux \u00c9tats-Unis font bouger les march\u00e9s financiers"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.vtmarkets.com\/wp-content\/uploads\/2026\/09\/codeNmUzNGJjNjc3Zjc4N2Y0MTA3ZmUzMjFhYjY1YWUxNWNfVGowbGVxRWVZaUliSHYwNGhSOW9pMjZyZ01jaklHSjJfVG9rZW46T3JDNWJqOHRYb0lsend4UWtyWWxjekxoZ0xkXzE3ODkwMTg3MjE6MTc4OTAyMjMyMV9WNAampadd_watermarktrueampscene_typeCCM.png\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Chaque mois, les traders se concentrent sur l\u2019une des statistiques am\u00e9ricaines les plus suivies\u202f: l\u2019<strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/complete-consumer-price-index-guide-2025-smarter-investing\/\">indice des prix \u00e0 la consommation (CPI)<\/a><\/strong>. Cette publication mesure l\u2019inflation, c\u2019est\u2011\u00e0\u2011dire la hausse g\u00e9n\u00e9rale des prix, et son impact d\u00e9passe souvent les seuls prix pay\u00e9s par les m\u00e9nages.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sur les march\u00e9s, le CPI peut modifier les anticipations sur la prochaine d\u00e9cision de la R\u00e9serve f\u00e9d\u00e9rale (Fed, la banque centrale am\u00e9ricaine), surtout si le chiffre s\u2019\u00e9carte du consensus. Un CPI plus \u00e9lev\u00e9 que pr\u00e9vu renforce l\u2019id\u00e9e d\u2019une politique mon\u00e9taire plus restrictive (taux directeurs plus \u00e9lev\u00e9s), tandis qu\u2019un CPI plus faible nourrit des attentes de baisse des taux. Ces r\u00e9visions se r\u00e9percutent ensuite sur le dollar, l\u2019or et les actions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chaque mois, les traders se concentrent sur l\u2019une des statistiques am\u00e9ricaines les plus suivies\u202f: l\u2019<strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/complete-consumer-price-index-guide-2025-smarter-investing\/\">indice des prix \u00e0 la consommation (CPI)<\/a><\/strong>. Cette publication mesure l\u2019inflation, c\u2019est\u2011\u00e0\u2011dire la hausse g\u00e9n\u00e9rale des prix, et son impact d\u00e9passe souvent les seuls prix pay\u00e9s par les m\u00e9nages.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u2019est-ce que le CPI et pourquoi est-ce important\u202f?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le CPI mesure l\u2019\u00e9volution, dans le temps, des prix d\u2019un large panier de biens et services. Ce panier regroupe notamment le logement, l\u2019alimentation, l\u2019\u00e9nergie, les transports, la sant\u00e9 et les biens de consommation. Il donne une vision d\u2019ensemble du co\u00fbt de la vie aux \u00c9tats\u2011Unis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le CPI est publi\u00e9 en variation mensuelle (mois sur mois) et annuelle (sur un an). Le chiffre mensuel compare les prix au mois pr\u00e9c\u00e9dent, l\u2019annuel les compare au m\u00eame mois de l\u2019ann\u00e9e pr\u00e9c\u00e9dente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les traders suivent aussi le <strong>CPI \u00ab\u202fcore\u202f\u00bb (inflation sous\u2011jacente)<\/strong>, qui exclut l\u2019alimentation et l\u2019\u00e9nergie. Ces postes sont tr\u00e8s volatils (prix qui bougent fortement) \u00e0 cause de la m\u00e9t\u00e9o, de ruptures d\u2019approvisionnement ou d\u2019\u00e9v\u00e9nements g\u00e9opolitiques. L\u2019inflation sous\u2011jacente aide donc \u00e0 juger si la hausse des prix devient durable. Beaucoup de traders compl\u00e8tent le CPI avec d\u2019autres <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/leading-lagging-coincident-economic-indicators-explained\/\">indicateurs avanc\u00e9s et retard\u00e9s<\/a><\/strong>\u202f: les indicateurs avanc\u00e9s donnent des signaux avant l\u2019\u00e9conomie, les retard\u00e9s confirment apr\u00e8s coup.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mais le chiffre \u00ab\u202fheadline\u202f\u00bb (chiffre global) ne suffit pas. Le point cl\u00e9 est l\u2019\u00e9cart avec les attentes du march\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CPI et R\u00e9serve f\u00e9d\u00e9rale<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le lien entre le CPI et la Fed explique l\u2019attention autour de cette publication.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La Fed vise la stabilit\u00e9 des prix tout en soutenant l\u2019emploi. Une inflation persistante complique des baisses de taux. Si l\u2019inflation reste trop \u00e9lev\u00e9e, la Fed peut maintenir des taux hauts plus longtemps. Une remont\u00e9e de l\u2019inflation peut m\u00eame raviver l\u2019id\u00e9e d\u2019un tour de vis (hausse de taux).<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Treasuries fell as traders worried that rising oil prices will fan inflation and add to pressure on the Federal Reserve to raise interest rates <a href=\"https:\/\/t.co\/FY5254fPCb\">https:\/\/t.co\/FY5254fPCb<\/a><\/p>&mdash; Bloomberg (@business) <a href=\"https:\/\/x.com\/business\/status\/2097700319773814828?ref_src=twsrc%5Etfw\">September 9, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 l\u2019inverse, si l\u2019inflation ralentit durablement, la Fed dispose de plus de marge pour baisser les taux, surtout si l\u2019emploi et la croissance montrent des signes de faiblesse.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est l\u00e0 que le CPI compte pour les traders\u202f: le march\u00e9 tente en permanence d\u2019anticiper la prochaine d\u00e9cision de la Fed. Comprendre le fonctionnement des <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/how-to-trade-interest-rate-expectations\/\">anticipations de taux<\/a><\/strong> (ce que le march\u00e9 \u00ab\u202fattend\u202f\u00bb pour les taux) est essentiel pour g\u00e9rer la volatilit\u00e9 (mouvements rapides). Quand le CPI s\u2019\u00e9carte des pr\u00e9visions, les traders doivent s\u2019adapter \u00e0 des <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/mixed-economic-signals-how-investors-should-respond\/\">signaux \u00e9conomiques contradictoires<\/a><\/strong> selon les classes d\u2019actifs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Par exemple, si l\u2019inflation est nettement au\u2011dessus des attentes, les traders peuvent r\u00e9duire leurs paris sur des baisses de taux ou augmenter la probabilit\u00e9 de taux plus \u00e9lev\u00e9s. Un CPI plus faible que pr\u00e9vu peut produire l\u2019effet inverse.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment le CPI influence le dollar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le dollar am\u00e9ricain r\u00e9agit fortement aux anticipations de taux. Si les march\u00e9s s\u2019attendent \u00e0 des taux am\u00e9ricains plus \u00e9lev\u00e9s, les actifs am\u00e9ricains peuvent para\u00eetre plus attractifs, ce qui soutient la demande de dollars.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un CPI plus \u00e9lev\u00e9 peut donc soutenir le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/why-does-dxy-rise-in-uncertain-markets\/\">Dollar Index (DXY)<\/a><\/strong> (indice qui mesure le dollar face \u00e0 un panier de grandes devises) si le march\u00e9 y voit une raison de maintenir une politique restrictive. Lors des annonces CPI, les prix peuvent bouger violemment\u202f: la gestion du risque est essentielle, notamment via les <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/how-to-manage-risk-when-trading-dxy-cfds\/\">CFD sur le DXY<\/a><\/strong> (produits d\u00e9riv\u00e9s qui r\u00e9pliquent un prix, avec effet de levier possible). \u00c0 l\u2019inverse, un CPI plus faible peut peser sur le dollar face aux principales devises.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">The dollar neared its lowest in nearly seven months as the yen rallied, with traders looking ahead to the US Treasury\u2019s buyback announcement and inflation data later this week <a href=\"https:\/\/t.co\/ygYvRrEIMZ\">https:\/\/t.co\/ygYvRrEIMZ<\/a><\/p>&mdash; Bloomberg (@business) <a href=\"https:\/\/x.com\/business\/status\/2097593389067743578?ref_src=twsrc%5Etfw\">September 9, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La r\u00e9action d\u00e9pend toutefois de ce qui est d\u00e9j\u00e0 int\u00e9gr\u00e9 dans les cours (ce que le march\u00e9 a d\u00e9j\u00e0 \u00ab\u202fpric\u00e9\u202f\u00bb).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si le march\u00e9 attend d\u00e9j\u00e0 un CPI solide et que le chiffre ressort proche, la r\u00e9action du dollar peut \u00eatre limit\u00e9e. En revanche, une surprise marqu\u00e9e \u00e0 la hausse ou \u00e0 la baisse peut provoquer un mouvement bien plus ample, les traders ajustant leurs positions sur les <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/best-currency-pairs-to-trade-top-10-forex-pairs-guide\/\">principales paires de devises du forex<\/a><\/strong> (march\u00e9 des changes).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comparer le <strong>chiffre publi\u00e9<\/strong>, le <strong>consensus<\/strong> et le <strong>chiffre pr\u00e9c\u00e9dent<\/strong> est souvent plus utile que regarder le CPI seul.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Que signifie le CPI pour l\u2019or\u202f?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019or r\u00e9agit souvent vite aux changements d\u2019inflation et d\u2019anticipations de taux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le lien passe surtout par les rendements obligataires et le dollar. L\u2019or ne verse pas d\u2019int\u00e9r\u00eat\u202f: quand les rendements des bons du Tr\u00e9sor am\u00e9ricain (Treasuries) montent et que les taux attendus restent \u00e9lev\u00e9s, l\u2019or devient moins attractif face aux actifs qui rapportent un int\u00e9r\u00eat. Un dollar plus fort p\u00e8se aussi sur l\u2019or, car il est cot\u00e9 en dollars.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Gold climbs on subdued US dollar as inflation data awaited amid oil rally <a href=\"https:\/\/t.co\/OXp16B9rFc\">https:\/\/t.co\/OXp16B9rFc<\/a> <a href=\"https:\/\/t.co\/OXp16B9rFc\">https:\/\/t.co\/OXp16B9rFc<\/a><\/p>&mdash; Reuters (@Reuters) <a href=\"https:\/\/x.com\/Reuters\/status\/2097872711640912101?ref_src=twsrc%5Etfw\">September 10, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Un CPI plus \u00e9lev\u00e9 peut donc faire pression sur l\u2019or s\u2019il pousse le march\u00e9 \u00e0 anticiper des taux plus hauts ou des rendements des Treasuries en hausse. Un CPI plus faible peut au contraire r\u00e9duire ces anticipations et faire reculer les rendements, ce qui peut soutenir le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/xauusd-price-forecast-gold-trading-analysis-charts-news\/\">XAU\/USD<\/a><\/strong> (prix de l\u2019or en dollars par once).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La relation n\u2019est pas m\u00e9canique. Une inflation \u00e9lev\u00e9e peut aussi accro\u00eetre l\u2019int\u00e9r\u00eat pour les m\u00e9taux pr\u00e9cieux, per\u00e7us comme une protection quand le pouvoir d\u2019achat baisse. Mais l\u2019or n\u2019est pas toujours une couverture efficace contre l\u2019inflation selon le contexte macro\u00e9conomique. Les traders regardent souvent les <strong>taux r\u00e9els<\/strong> (taux d\u2019int\u00e9r\u00eat corrig\u00e9s de l\u2019inflation) et le niveau des rendements des Treasuries pour obtenir un signal plus clair que le seul chiffre d\u2019inflation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi les actions am\u00e9ricaines r\u00e9agissent au CPI<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les actions am\u00e9ricaines sont sensibles aux anticipations d\u2019inflation car les taux influencent le co\u00fbt du financement et la valorisation des b\u00e9n\u00e9fices futurs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un CPI sup\u00e9rieur aux attentes peut faire remonter les rendements des Treasuries via des anticipations de taux plus \u00e9lev\u00e9s. Cela met sous pression les valorisations, surtout pour les entreprises de croissance et de technologie, dont la valeur d\u00e9pend fortement de profits attendus plus loin dans le temps.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Wall St slips as steep oil prices stoke inflation concerns ahead of CPI <a href=\"https:\/\/t.co\/YAoaUmOe8N\">https:\/\/t.co\/YAoaUmOe8N<\/a> <a href=\"https:\/\/t.co\/YAoaUmOe8N\">https:\/\/t.co\/YAoaUmOe8N<\/a><\/p>&mdash; Reuters (@Reuters) <a href=\"https:\/\/x.com\/Reuters\/status\/2097364360146407731?ref_src=twsrc%5Etfw\">September 8, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Un CPI plus faible cr\u00e9e l\u2019environnement inverse. Si le march\u00e9 pense que la Fed peut baisser les taux, des rendements en baisse peuvent soutenir les valorisations et am\u00e9liorer le sentiment sur des indices de r\u00e9f\u00e9rence comme le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/sp-500-trading-guide\/\">S&amp;P 500<\/a><\/strong> et le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/how-to-trade-nas100-cash\/\">NAS100<\/a><\/strong> (indice Nasdaq 100).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Attention toutefois\u202f: une inflation tr\u00e8s faible n\u2019est pas forc\u00e9ment une bonne nouvelle pour les actions. Si elle s\u2019accompagne d\u2019un net ralentissement de l\u2019activit\u00e9, le march\u00e9 peut surtout s\u2019inqui\u00e9ter des b\u00e9n\u00e9fices et de la croissance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est pourquoi les investisseurs institutionnels appliquent souvent une <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/top-down-vs-bottom-up-fundamental-analysis-explained\/\">analyse fondamentale \u00ab\u202ftop\u2011down\u202f\u00bb<\/a><\/strong> (partir de l\u2019\u00e9conomie et des taux, puis aller vers les secteurs et entreprises) pour interpr\u00e9ter le CPI dans le contexte plus large de l\u2019\u00e9conomie am\u00e9ricaine.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Que surveiller lors de la publication du CPI\u202f?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Premier point\u202f: l\u2019\u00e9cart entre le chiffre publi\u00e9 et le consensus. Plus la surprise est grande, plus la r\u00e9action initiale a des chances d\u2019\u00eatre forte.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il faut aussi suivre l\u2019\u00e9cart entre CPI global et inflation sous\u2011jacente. Si le CPI monte surtout \u00e0 cause de l\u2019\u00e9nergie, tr\u00e8s volatile, alors que l\u2019inflation sous\u2011jacente reste stable, l\u2019interpr\u00e9tation n\u2019est pas la m\u00eame que si les deux acc\u00e9l\u00e8rent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les rendements des Treasuries donnent un contexte pr\u00e9cieux. Observer le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/how-to-read-the-10-year-treasury-yield-chart\/\">rendement du Treasury \u00e0 10 ans<\/a><\/strong> (taux d\u2019int\u00e9r\u00eat implicite sur l\u2019obligation d\u2019\u00c9tat am\u00e9ricaine \u00e0 10 ans) apr\u00e8s le CPI montre si le march\u00e9 revoit sa trajectoire de politique mon\u00e9taire. Les \u00ab\u202fcassures\u202f\u00bb de rendements (franchissements de niveaux techniques) peuvent aussi signaler un mouvement plus large sur le forex et les mati\u00e8res premi\u00e8res.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il faut enfin \u00e9viter de se concentrer uniquement sur les premi\u00e8res minutes. Les mouvements peuvent se retourner lorsque le march\u00e9 lit les d\u00e9tails et r\u00e9\u00e9value l\u2019impact sur la Fed. Une <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/trade-risk-management-tips\/\">gestion du risque<\/a><\/strong> stricte (taille de position, stop\u2011loss) aide \u00e0 limiter les d\u00e9g\u00e2ts lors de ces phases de forte volatilit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Trois r\u00e9actions possibles du march\u00e9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un <strong>CPI plus \u00e9lev\u00e9 que pr\u00e9vu<\/strong> peut renforcer la crainte d\u2019une inflation durable et r\u00e9duire les attentes d\u2019assouplissement mon\u00e9taire (baisse des taux). Dans ce cas, le dollar et les rendements des Treasuries peuvent \u00eatre soutenus, tandis que l\u2019or et les actions sensibles aux taux peuvent souffrir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un chiffre <strong>conforme aux attentes<\/strong> peut provoquer une r\u00e9action limit\u00e9e, surtout si le march\u00e9 l\u2019a d\u00e9j\u00e0 int\u00e9gr\u00e9. L\u2019attention peut alors se d\u00e9placer vers d\u2019autres indicateurs et les prochaines prises de parole de la Fed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un <strong>CPI plus faible que pr\u00e9vu<\/strong> peut renforcer les anticipations de baisses de taux et peser sur le dollar et les rendements. L\u2019or et les actions peuvent en profiter si des taux plus bas deviennent plus probables.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce sont des sc\u00e9narios g\u00e9n\u00e9raux, pas des certitudes. Le positionnement (o\u00f9 sont plac\u00e9s les investisseurs), l\u2019ampleur de la surprise et le contexte macro\u00e9conomique peuvent changer la r\u00e9action finale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Regarder au-del\u00e0 du chiffre global<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le CPI est souvent trait\u00e9 comme un seul chiffre \u00ab\u202fqui fait le march\u00e9\u202f\u00bb, mais son int\u00e9r\u00eat vient surtout de ce qu\u2019il r\u00e9v\u00e8le sur la trajectoire de la politique mon\u00e9taire.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La vraie question n\u2019est pas seulement de savoir si l\u2019inflation monte ou baisse, mais si ces donn\u00e9es modifient ce que le march\u00e9 attend de la Fed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela fait de chaque publication du CPI un point d\u2019\u00e9tape. En comparant le chiffre publi\u00e9 au consensus, en regardant les composantes, et en observant la r\u00e9action des rendements et du dollar, les traders comprennent mieux l\u2019interpr\u00e9tation du march\u00e9.<\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Foire aux questions (FAQ)<\/strong><\/summary>\n<h4 class=\"wp-block-heading\"><strong>1) Qu\u2019est-ce que le CPI et pourquoi est-il important pour les traders\u202f?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Le CPI mesure la variation moyenne des prix pay\u00e9s par les consommateurs pour un panier de biens et services. C\u2019est un indicateur central de l\u2019inflation. Les traders le surveillent car une surprise sur l\u2019inflation peut changer les d\u00e9cisions de taux de la Fed, ce qui accro\u00eet la volatilit\u00e9 sur le forex, l\u2019or et les actions.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2) Comment un CPI plus \u00e9lev\u00e9 que pr\u00e9vu peut-il influencer le dollar\u202f?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Un CPI sup\u00e9rieur aux attentes sugg\u00e8re une inflation tenace, ce qui augmente la probabilit\u00e9 que la Fed maintienne des taux \u00e9lev\u00e9s, voire les rel\u00e8ve. Des taux plus hauts rendent en g\u00e9n\u00e9ral les actifs libell\u00e9s en dollars plus attractifs, ce qui peut faire monter le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/why-does-dxy-rise-in-uncertain-markets\/\">DXY<\/a><\/strong> (indice du dollar).<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3) Pourquoi l\u2019or baisse-t-il souvent quand le CPI ressort au-dessus des attentes\u202f?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019or ne verse pas d\u2019int\u00e9r\u00eat. Quand le CPI surprend \u00e0 la hausse, les rendements des Treasuries et les anticipations de taux montent souvent, ce qui rend l\u2019or moins attractif que les actifs qui rapportent un int\u00e9r\u00eat. En plus, un dollar plus fort, li\u00e9 \u00e0 ces anticipations, peut peser sur le prix de l\u2019or, cot\u00e9 en dollars (<strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/xauusd-price-forecast-gold-trading-analysis-charts-news\/\">XAU\/USD<\/a><\/strong>).<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4) Comment les indices actions r\u00e9agissent-ils au CPI (S&amp;P 500, Nasdaq)\u202f?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Les actions r\u00e9agissent souvent n\u00e9gativement \u00e0 une inflation plus forte que pr\u00e9vu, car elle implique des co\u00fbts d\u2019emprunt plus \u00e9lev\u00e9s et r\u00e9duit la valeur actuelle des b\u00e9n\u00e9fices futurs, surtout pour la croissance et la tech. \u00c0 l\u2019inverse, un CPI plus faible peut soutenir le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/sp-500-trading-guide\/\">S&amp;P 500<\/a><\/strong> et le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/how-to-trade-nas100-cash\/\">NAS100<\/a><\/strong> si le march\u00e9 anticipe des baisses de taux.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>5) Quelle diff\u00e9rence entre CPI \u00ab\u202fheadline\u202f\u00bb et CPI \u00ab\u202fcore\u202f\u00bb\u202f?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Le CPI \u00ab\u202fheadline\u202f\u00bb est le chiffre global, qui inclut tous les postes. Le CPI \u00ab\u202fcore\u202f\u00bb (inflation sous\u2011jacente) exclut l\u2019alimentation et l\u2019\u00e9nergie, afin de mieux suivre la tendance de fond des prix.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>6) Comment se pr\u00e9parer aux mouvements de march\u00e9 le jour du CPI\u202f?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Il faut suivre le consensus, surveiller le <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/how-to-read-the-10-year-treasury-yield-chart\/\">rendement du Treasury \u00e0 10 ans<\/a><\/strong>, et appliquer une <strong><a href=\"https:\/\/www.vtmarkets.com\/discover\/trade-risk-management-tips\/\">gestion du risque<\/a><\/strong> stricte (taille de position, stop\u2011loss) pour traverser la volatilit\u00e9 apr\u00e8s publication.<\/p>\n<\/details>\n\n\n\n\n<p class=\"wp-block-paragraph\"><b>Commencez \u00e0 trader d\u00e8s maintenant \u2014 cliquez <a href=\"https:\/\/www.vtmarkets.com\/fr-latam\/trade-now\/\">ici<\/a> pour cr\u00e9er votre compte r\u00e9el VT Markets.<\/b>\n\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Chiffre qui fait trembler Wall Street, le CPI am\u00e9ricain pilote les anticipations de Fed. Surprise d\u2019inflation: dollar et rendements bougent, or et actions r\u00e9ajustent. Focus core, consensus, d\u00e9tail. Gestion du risque.<\/p>\n","protected":false},"author":87,"featured_media":53248,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6,9],"tags":[],"class_list":["post-53249","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-featured","category-learn"],"acf":{"acf_article_selection_author":null},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Chiffre qui fait trembler Wall Street, le CPI am\u00e9ricain pilote les anticipations de Fed. Surprise d\u2019inflation: dollar et rendements bougent, or et actions r\u00e9ajustent. Focus core, consensus, d\u00e9tail. 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Surprise d\u2019inflation: dollar et rendements bougent, or et actions r\u00e9ajustent. Focus core, consensus, d\u00e9tail. 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Surprise d\u2019inflation: dollar et rendements bougent, or et actions r\u00e9ajustent. Focus core, consensus, d\u00e9tail. Gestion du risque.","og:url":"https:\/\/www.vtmarkets.com\/fr-latam\/featured\/cpi-explained-how-us-inflation-data-moves-financial-markets\/","article:published_time":"2026-09-10T08:01:32+00:00","article:modified_time":"2026-09-10T08:01:32+00:00","twitter:card":"summary_large_image","twitter:title":"IPC expliqu\u00e9 : comment les donn\u00e9es sur l\u2019inflation aux \u00c9tats-Unis font bouger les march\u00e9s financiers - VT Markets","twitter:description":"Chiffre qui fait trembler Wall Street, le CPI am\u00e9ricain pilote les anticipations de Fed. Surprise d\u2019inflation: dollar et rendements bougent, or et actions r\u00e9ajustent. Focus core, consensus, d\u00e9tail. Gestion du risque."},"aioseo_meta_data":{"post_id":"53249","title":null,"description":null,"keywords":null,"keyphrases":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_custom_url":null,"og_image_custom_fields":null,"og_custom_image_width":null,"og_custom_image_height":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","tabs":null,"priority":null,"frequency":null,"local_seo":null,"created":"2026-09-10 08:01:32","updated":"2026-09-10 08:03:27","focus_keyword":null,"additional_keywords":null,"truseo_locale":null,"primary_term":null,"og_image_url":null,"og_image_width":null,"og_image_height":null,"twitter_image_url":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"limit_modified_date":false,"ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":"2026-09-10 08:03:27"},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t<a href=\"https:\/\/www.vtmarkets.com\/fr-latam\" title=\"Home\">Home<\/a>\n<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t<a href=\"https:\/\/www.vtmarkets.com\/fr-latam\/category\/featured\/\" title=\"Featured\">Featured<\/a>\n<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\tIPC expliqu\u00e9 : comment les donn\u00e9es sur l\u2019inflation aux \u00c9tats-Unis font bouger les march\u00e9s financiers\n<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/www.vtmarkets.com\/fr-latam"},{"label":"Featured","link":"https:\/\/www.vtmarkets.com\/fr-latam\/category\/featured\/"},{"label":"IPC expliqu\u00e9 : comment les donn\u00e9es sur l\u2019inflation aux \u00c9tats-Unis font bouger les march\u00e9s financiers","link":"https:\/\/www.vtmarkets.com\/fr-latam\/featured\/cpi-explained-how-us-inflation-data-moves-financial-markets\/"}],"_links":{"self":[{"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/posts\/53249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/users\/87"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/comments?post=53249"}],"version-history":[{"count":0,"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/posts\/53249\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/media\/53248"}],"wp:attachment":[{"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/media?parent=53249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/categories?post=53249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vtmarkets.com\/fr-latam\/wp-json\/wp\/v2\/tags?post=53249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}